<!--
 * @Author: jswang
 * @Date: 2021-07-21 10:35:43
 * @LastEditTime: 2021-07-21 10:56:27
-->
<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
    <div id="main" style="width: 600px;height:400px;"></div>
    </el-card>
  </div>
</template>
<script>
//导入echarts
// import echarts from 'echarts'
let echarts = require('echarts')
import _ from 'lodash'
export default {
  data(){
    return{
      options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created(){

  },
  //dom元素已经渲染完毕
  async mounted(){
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

    const {data:res} = await this.$http.get('reports/type/1')
    if(res.meta.status !== 200){
      return this.$message.error("获取折线图数据失败")
    }


    // 指定图表的配置项和数据
    var option = {
        title: {
            text: 'ECharts 入门示例'
        },
        tooltip: {},
        legend: {
            data:['销量']
        },
        xAxis: {
            data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
        },
        yAxis: {},
        series: [{
            name: '销量',
            type: 'bar',
            data: [5, 20, 36, 10, 10, 20]
        }]
    };
    //用 lodash 方法 合并对象
    const result = _.merge(this.options,res.data)
    // 使用刚指定的配置项和数据显示图表。
    myChart.setOption(result);
  },
  methods:{
  }
}
</script>
<style lang="less" scoped>

</style>

